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开发开放访问工具,使用DICOM-RT患者数据自动计算使用因子.

Dong Hyeok Choi1,2,3, Dong Wook Kim1,2,3, So Hyun Park4

  • 1Department of Medicine, Yonsei University College of Medicine, Seoul, Korea.

Physical and engineering sciences in medicine
|July 20, 2023
PubMed
概括

这项研究使用DICOM-RT数据重新计算了线性加速器 (LINAC) 使用因子,由于现代治疗趋势,发现的值高于NCRP 151的建议. 机构应根据患者数据重新计算使用因子,以获得准确的辐射屏蔽.

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科学领域:

  • 医学物理 医学物理
  • 辐射瘤学 辐射瘤学
  • 辐射屏蔽 辐射屏蔽

背景情况:

  • 使用因子对于线性加速器 (LINAC) 设施的辐射屏蔽计算至关重要.
  • NCRP 151提供了确定使用因子的既定方法.
  • 不断发展的放射治疗技术可能会影响现有的使用因子计算的准确性.

研究的目的:

  • 考虑到现代治疗方式和趋势,重新计算LINACs的使用因子.
  • 将重新计算的使用因子与NCRP 151报告中的值进行比较.
  • 评估处理技术和地点对使用因子的影响.

主要方法:

  • 开发了一个内部程序,利用医学辐射治疗 (DICOM-RT) 数字成像和通信数据.
  • 计算了三个医院的四个LINAC的使用因子.
  • 根据治疗技术 (3D-CRT,IMRT/VMAT) 和治疗地点分析的数据.

主要成果:

  • 在45°和90°重新计算的使用因子分别比NCRP 151值高14.8%和13.5%.
  • 在3D-CRT比率高的房间中,与NCRP 151.1相比,使用因子偏差高达14.6%.
  • 对乳房和脊柱等特定部位观察到使用因素的显著差异.

结论:

  • 当前使用因素可能不准确地反映现代辐射疗法实践.
  • 对于精确的辐射屏蔽,建议对特定患者的数据和机构的重新计算.
  • 在LINAC技术和处理计划的进步需要更新屏蔽参数评估.